pressure on, to a large extent, working through russia, obviously, which is one of assad's last allies, a lot of chat out there could assad get asign lum somewhere, something like that. by all accounts they have been willing to continue with the diplomatic track until this development. now, we're not saying there is going to be military action, but certainly the military planning, being updated, the options being updated, because now of this movement of chemical weapons, and a very good understanding, they tell us, of the locations of where they are, and the intent, possible intent to use them, that's what's leading to this potential change in something that everyone is concerned about. it is why you saw president obama warning assad so stride endly this week. >> and there has got to be so much discussion and intelligence circles as to why now what is prompting president assad to do this. the question really is what is that line? what is the trigger that would launch a potential u.s. military response? >> well, i think your first point is really key. why is assad even going down this r